Internal-combustion engine



S. S. GUY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT. I4. 1918.

1,331,911. atented Feb. 24,1920.-

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SYDNEY SLATER GUY, OF WOLVERIIAMPTON, ENGLAND.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent. Patented Feb, 24,1920.

Application filed October 14, 1918. .Serial No. 258,052.

To all whom it may concern Be it known that I, SYDNEY SLATER GUY, subjectof the King of Great Britain, residing at VVoodview, Finchfield, Wolverhampton, Staifordshire, England, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the cylinders as to leave the cylinder head free to be removed without involving any interference with or dismantling of the valve mechanism. I

The angle at which the valves are arranged may vary within fairly wide limits and is determined within any given instance by considerations of general design in the engine as a whole. It is found however, that the object in view may be most advantageously attained by disposing the valves at an angle somewhat between 45 and 135 in the plane of the center line of the cylinder.

By means of this arrangement of the valves thevalve operating mechanism may be disposed so as to leave the cylinder head or cover entirely free. and capable of'being readily removed by undoing a few retaining bolts and nuts. In the case of a water cooled engine the said cylinderhead or cover may Jdesired, be constituted by the top water pipe.

In order that the invention may be clearly understood and readily carried into practical efi'ect reference is made in further describing the same to the accompanying drawing which represents a vertical sectional view of an internal combustion engine constructed according to this invention.

In the drawing 2 represents the engine cylinder and 3 the removable cylinder head or cover which takes an oblique seating upon the top of the cylinder and may conveniently take the form of a hollow water cooled casting provided'with elbow connections 4 for establishing connection between the cylinder jacket 5 on the one hand, and the top water pipe 6 on the other. The water connections to the cylinder head might alternatively be made as ports in the joint between the cylinder-and head.

The valves which are of the puppet type represented by 7, are all arranged at the opposite side of the cylinder to the cylinder head and have their stems 8 inclined in a downward direction at an angle thereto of approximately in the plane of the cylinder axis. At or about this angle the valve seats 9, combustion chamber'lO and piston (not shown) are particularly accessible when the cylinder head is removed. and the valves and piston can also be withdrawn through the opening made by the removal ofthe head or cover without the necessity 'for dismantling the valve mechanism, while at the same time no internal pockets in the sense commonly understood are formed in the combustion chamber.

1 If desired the cylinder head 3 may, as shown be provided with a compression plate 11 for the purpose of reducing the case 13 as found necessary or desirable.

This construction also has the advantage that the valve rockers 14, valve stems 8 and springs 15 may be entirely inclosed ina dust proof and oil-tight casing 16 bolted to the side of the engine and made readily detachable. y

Where, however, as in the case more especially of air-craft engines-weight is an important factor the cam-shaft may be arranged at the ends ofthe valve stories so that the latter would be operated directly by the cams. By thus eliminating the valve rockers and rocker shaft'an appreciable saving. in weight would be obtained while the valves themselves would 'be given a direct lift.

Iclaim:

. 1. In internal combustion engines, a crank case having a flat top, acylinder mounted vertically on said crank case and spigoted in said fiat top, a water jacket, in-

let and exhaust passages, and a water outlet conncction all cast integrally with said cyl nder, a water outlet pipesecured to said connection, an oblique facing at the top of said cylinder, a water jacketed coverbolt ed to said facing, outside water connections 'between.said coverand cylinder jacket and between said cover and the water outlet pipe,

, valve seats formed directly in one side of said cylinder facing said cover, valves in said valve seats having their stems passing outwardly and downwardly between said inlet and exhaust passages and mechanism. for operating said valves.

2. Iii-internal combustion engines, a crank case having a flat top, a multi-cy-linder casting mounted verticallyon said crank case and spigoted in said fiattop, a water jacket, inlet and exhaust passages and a water outlet connection all cast integrally with said cvlinder casting, a water outlet pipe secured to said connection above the exhaust passages, an oblique facing at the top of said cylinder casting, a water jacketed cover bolted to said facing, a compression plate on said cover, outside water connections between said cover and cylinder water jacket and between said cover and said water outlet pipe,

valve seats formed in the side of said cylinder casting facing said cover, valves in said valve seats having their stems pas'sing outwardly and downwardly between said inlet and exhaust passages, a' rocker shaft mounted on the fiat top of said crank case alongside said cylinder casting, rockers on said shaft for operating said valves, a valve cam shaft journaled in said crank case and adapted to operate said rockers, 'and'a removable casing bolted to the side of said cylinder casting and to the crank case for inolosing the valve operating mechanism.

In testimony whereof I afiix my signature.

SYDNEY SLATER GUY. 

